Darci Lynne and Petunia proved they have a lot going for them, as they surprise AGT by singing opera.

Darci Lynne Farmer had been eliminated from "America's Got Talent: The Champions" in January, but she was given one more chance when she was brought back as a Wild Card for the Finals where 12 "AGT" superstars will be vying for the ultimate accolade.

Wild Cards are eliminated performers that are brought back by the judges for another shot at the brass ring - 14-year-old Farmer got her shot, and she didn't waste it.

COWELL: "YOU DESERVE TO BE THE WORLD CHAMPION"

The judges, including the notoriously hard to impress Simon Cowell, listened open-mouthed to her performance.

Cowell would later comment that opera is never easy, but that Farmer's feat of singing it flawlessly through a rabbit was the most incredible thing he'd ever seen.

TRIUMPH AFTER BEING ELIMINATED

For Farmer, it was a vindication and triumph after having been eliminated. Determined to make the most of her chance when she was called back as a Wild Card, she admits she used opera as her "secret weapon."

“How was I going to come back and blow the roof off the place? I would definitely consider Petunia to be my lucky charm. She helped me get the Golden Buzzer and she helped me win season 12. She is a diva and she likes to win.”

The Finale on February 18 is going to be a nightmare for the judges who have such legends as Susan Boyle, opera singer Cristina Ramos, Kechi Okwuchi, Brian Justin Crum, Angelica Hale, and Paul Potts - among others.

I had so much fun performing on #AGTChampions and getting to perform an original song for the very first time, hope you liked it! I can't wait to share more music with you guys soon xxx pic.twitter.com/2kw8wxbc1l